The e606 only supports wma, acc audio formats to play in the in-built media player (do you have the transfer software and cable? You will see this is the only format you can upload if you do!)
And of course midi ringtunes...

yeah i got the cable and by software i got what came in the box. is that type of file you get from ripping a cd with windows media player?? if not can u suggest some good software for uploadin them and other stuff plz.